Double-acting pump



(No Model.)

B. L. SHERMAN. DOUBLE ACTING PUMP.

Patented Sept.

I No. 411,263.

Wi named:

n. PETERS. Phnloidhogmphur. Washington. D4 c.

UNITED STATES PATENT OFFICE.

RALPH L. SHERMAN, OF MONMOUTH, ILLINOIS.

DOUBLE-ACTING PUMP.

SPECIFICATION forming part of Letters Patent No. 411,263, dated September 17, 1889.

Application filed June 5, 1889. fierial No. 313,224. (No model.)

To all whom, it may concern..-

Be it known that I, RALPH L. SHERMAN, a citizen of the United States, residing at Monmouth, in the county of \Varren and State of Illinois, have invented certain new and useful Improvements in Combined Single-Acting and Double-Acting Sin gle-Oylinder Pumps, of which the following is a specification.

This invention relates to a combined single-acting and double-acting single-cylinder pump; and it consists in constructions and combinations hereinafter described and claimed.

The accompanying drawing, which forms a part of this specification, is partly an elevation and partly a sectional elevation of a pump which embodies the main features of my invention in the best form at present known to me, and also shows part of a well in which it is mounted.

Referring to the drawing by letter, A represents a horizontal cylinder, in which the piston B is reciprocated by a lever C, which is connected with the piston-rod b by a rodlink Z), and is fulcrumed at its lower end to the frame D, which covers the well. The piston B may be reciprocated by any other means desired. A suction-pipe E extends downwardly from one end of the cylinder A, and a similar pipe E extends downwardly from its other end, and these pipes E E uniting form the main suction-pipe E which extends downwardly into the well F.

A short distance above the union of the pipes E E the pipe E is provided with a stopvalve 6, which is operated by turning a handle e, and the pipe E is provided with a similar stop-valve e operated by a handle 6 Close to and above stop-valve e is a ball-valve e, limited in its motion upwardly from its seat e by a cage e. A ball-valve e is located on a seat a above the stop-valve c and is limited in its upward motion by a cage 6.

.A deliver -pipe G extends upwardly from one end of the cylinder A, and a similar pipe G extends upwardly from its other end, and these pipes uniting form a common delivery pipe G A short distance above the cylinder A the pipe G is provided with a balhvalve 9, having a seat g and cage and the pipe G is provided with a similar valve g, having a seat g and cage 9 A short distance below the union of the pipes G and G the pipe G is provided with a stop-valve g having a handle 9 and the'pipe G is provided with a similarly-located stop-valve g having a handle g".

This pump may be fixed in position by any means preferred, and no particular means are shown for that purpose. As shown by full lines, the piston Bis supposed to be approaching and very near the limit of its throw or movement toward the end A of the cylinder A, (the stop-valves e, 6 g, and 9 all being open,) water will pass upwardly, as such movement of the piston is made, through the now open valve 6 to fill the cylinder A, while the same movement of the piston will force the previously-contained water in said cylinder upwardly through the pipe G and now open valve 9. While the piston B moves, as last described, the valves 6 and remain closed, Then the piston B is moved in an opposite direction to that last described and toward the end A of the cylinder A, the water contained in said cylinder will be forced outwardly through the pipe G and now open valve 1 and water will be drawn in to refill the cylinder A through pipes E and E and now open valve 6 the valves 6 and g being closed. The pump performing as last described is a double-acting singlecylinder pump. 13y closing the stop-valves e and g and thereby cutting off the passage for water through the'pipes E and G, respectively, it will be readily seen, without special explanation, that water will be drawn to the cylinder A through the pipes E F as the piston moves toward the end A of said cylinder, and will be forced from the cylinder through the pipes G G as the piston moves in an opposite direction. By opening the stop-valves e and g and closing the stop-valves. e and y water will be drawn through the pipes F E and delivered through the pipes G G The pump performing as described in this paragraph is a single-acting pump.

The stop-valves e and g may be closed, as hereinbefore described, for the purpose of cleaning or repairing either or both valves 6 or 9 while the pump is operating as a single acting pump, and for the purpose of getting at the valves 6 and g the pipes E and G have joints h and 72, respectively, which joints may be opened without interfering with the operation of the pump as a single-acting pump. The pipes E and G have similarly-located joints by means of which the valves 6 and g are accessible when the stopvalves 6 and g are closed. Each end of the cylinder A is provided with a faucet I, that one of which may be opened when the stopvalves at same side of pump are closed, to let out quickly sufficient- Water, so that the remainder will not interfere with pumping, as described.

The valves 6", e 6, and 9 may be of any other class of valve, as may also the stopvalves, if preferred, as I do notlimit my claims to anyspecific construction of valve.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the cylinder A, piston B, and its operating mechanism, the converging pipes G G, with valves g g and stopvalves g 9 and the converging pipes E E,

having valves e and e and stop-valves e and 9 substantially as and for the purpose specified.

2. In combination with the cylinder A and piston B, the converging pipes G G, united to form pipe G and provided with valves g 9 and stop-valves g 9 and the converging pipes E E, having valves 6 and c and stopvalves 6 and 6 and the faucets I, substantially as and for the purpose specified.

3. In combination with the cylinder A and piston B, the converging pipes G G, united to form pipe G and provided with valves 9 g and stop-valves g 9 and the converging pipes E E, having valves 6 and e and stopvalves 6 and c and each of said pipes E E G G having a joint at the place Where the ball-valve is located therein, substantially as and for the purpose specified.

In testimony whereof I affiX my signature in presence of two witnesses.

RALPH L. SHERMAN.

Witnesses:

IRVING T. BRADY, T. G. PEACOCK. 

